This description of the One Leg Stand test posted by Virginia DUI Lawyer.

• In the "DWI Detection and Standardized Field Sobriety Testing" student manual it emphasizes one final and major point. The validation of these tests applies only when the tests are administered in the prescribed, standardized manner; and only when the standardized clues are used to assess the suspect's performance; and only when the standardized criteria are employed to interpret that performance. It is reiterated that "If any one of the Standardized Field Sobriety test elements is changed, the validity is compromised. 

• The objective of the Standardized Field Sobriety tests are to increase arrest, decrease the average BAC of those arrested and decrease accidents related to DWI. These objectives in mind, one should question the subjective and unreliable tests that unfortunately are still most prevalent in police investigation.